Current File : /home/ugotscom/kma/vendor/beyondcode/laravel-websockets/src/WebSockets/Channels/PresenceChannel.php
<?php
namespace BeyondCode\LaravelWebSockets\WebSockets\Channels;
use Ratchet\ConnectionInterface;
use stdClass;
/**
* @link https://pusher.com/docs/pusher_protocol#presence-channel-events
*/
class PresenceChannel extends Channel
{
/**
* List of users in the channel keyed by their user ID with their info as value.
*
* @var array<string, array>
*/
protected $users = [];
/**
* List of sockets keyed by their ID with the value pointing to a user ID.
*
* @var array<string, string>
*/
protected $sockets = [];
public function subscribe(ConnectionInterface $connection, stdClass $payload)
{
$this->verifySignature($connection, $payload);
$this->saveConnection($connection);
$channelData = json_decode($payload->channel_data, true);
// The ID of the user connecting
$userId = (string) $channelData['user_id'];
// Check if the user was already connected to the channel before storing the connection in the state
$userFirstConnection = ! isset($this->users[$userId]);
// Add or replace the user info in the state
$this->users[$userId] = $channelData['user_info'] ?? [];
// Add the socket ID to user ID map in the state
$this->sockets[$connection->socketId] = $userId;
// Send the success event
$connection->send(json_encode([
'event' => 'pusher_internal:subscription_succeeded',
'channel' => $this->channelName,
'data' => json_encode($this->getChannelData()),
]));
// The `pusher_internal:member_added` event is triggered when a user joins a channel.
// It's quite possible that a user can have multiple connections to the same channel
// (for example by having multiple browser tabs open)
// and in this case the events will only be triggered when the first tab is opened.
if ($userFirstConnection) {
$this->broadcastToOthers($connection, [
'event' => 'pusher_internal:member_added',
'channel' => $this->channelName,
'data' => json_encode($channelData),
]);
}
}
public function unsubscribe(ConnectionInterface $connection)
{
parent::unsubscribe($connection);
if (! isset($this->sockets[$connection->socketId])) {
return;
}
// Find the user ID belonging to this socket
$userId = $this->sockets[$connection->socketId];
// Remove the socket from the state
unset($this->sockets[$connection->socketId]);
// Test if the user still has open sockets to this channel
$userHasOpenConnections = (array_flip($this->sockets)[$userId] ?? null) !== null;
// The `pusher_internal:member_removed` is triggered when a user leaves a channel.
// It's quite possible that a user can have multiple connections to the same channel
// (for example by having multiple browser tabs open)
// and in this case the events will only be triggered when the last one is closed.
if (! $userHasOpenConnections) {
$this->broadcastToOthers($connection, [
'event' => 'pusher_internal:member_removed',
'channel' => $this->channelName,
'data' => json_encode([
'user_id' => $userId,
]),
]);
// Remove the user info from the state
unset($this->users[$userId]);
}
}
protected function getChannelData(): array
{
return [
'presence' => [
'ids' => array_keys($this->users),
'hash' => $this->users,
'count' => count($this->users),
],
];
}
public function getUsers(): array
{
return $this->users;
}
public function toArray(): array
{
return array_merge(parent::toArray(), [
'user_count' => count($this->users),
]);
}
}
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